Well I got my hydro bill from November 17 to December 16, $144.08 , that's with the new heat pump and electric furnace. I have to say I am pretty pleased, we've had some pretty cold weather. I have it set to 20 at night, 23 during the day, the fan runs 24/7. The furnace has only kicked in a couple of times In the morning for a few minutes when the outside temperature was-17ish just to bring the inside temperature up to the 23 then the heat pump takes over. The house is much more comfortable than with the old propane furnace, it's been a bit of a learning experience but so far I think I made a great investment.